Bluetooth portable speaker



FIG. 1 is a top, front, right side, perspective view of a bluetooth portable speaker showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a cross-sectional view along line 7—7 in FIG. 3;

FIG. 8 is a top, front, perspective view thereof in a second condition;

FIG. 9 is a rear view thereof;

FIG. 10 is a top view thereof;

FIG. 11 is a bottom view thereof;

FIG. 12 is a left side view thereof; and,

FIG. 13 is a cross-sectional view along line 13—13 in FIG. 9.

The broken lines in the drawings illustrate environmental material that forms no part of the claimed design. 

The ornamental design for a bluetooth portable speaker, as shown and described. 